--- ray/doc/man/man1/rvu.1	2004/01/01 19:31:45	1.1
+++ ray/doc/man/man1/rvu.1	2005/06/13 20:07:55	1.3
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: rvu.1,v 1.1 2004/01/01 19:31:45 greg Exp $"
+.\" RCSid "$Id: rvu.1,v 1.3 2005/06/13 20:07:55 greg Exp $"
 .TH RVU 1 1/1/04 RADIANCE
 .SH NAME
 rvu - generate RADIANCE images interactively
@@ -147,6 +147,19 @@ is absent, or an '@' is followed by nothing, then
 the cursor is used to pick a specific image
 location for normalization.
 .TP
+.BI focus " [distance]"
+Set focus distance for depth-of-field sampling.
+If a distance in world coordinates is absent, then the cursor
+is used to choose a point in the scene on which to focus.
+(The focus distance setting does not affect rendering in
+.I rview,
+but can be used in
+.I rpict
+with the
+.I \-pd
+option to simulate depth-of-field on views saved from
+.I rview.)
+.TP
 .BI frame " [ xmin ymin xmax ymax ]"
 Set frame for refinement.
 If coordinates are absent, the cursor is used to
@@ -275,6 +288,7 @@ medium sampling (ms),
 pixel sample (ps),
 pixel threshold (pt),
 back face visibility (bv),
+random sampling (R),
 specular jitter (sj), and
 specular threshold (st).
 Once a variable has been changed, the "new" command can be used